Found in various parts of Asia the benzoin tree produces a sticky, reddish-brown resin, which is extremely aromatic, with strong vanilla and spice notes. In the West, the resin is best known as the main ingredient. The resin is soaked in chemical solvents to produce a thick reddish liquid called benzoin resinoid, which is not actually an essential oil, but an aromatic extract. When added to a vegetable oil, such as Sweet Almond, Benzoin Resinoid turns the blend cloudy.